Best 20-inch Mountain Bikes for Kids


We have compiled the list of our favorite 20-inch mountain bikes for kids. If you’re hoping to get your kid a bike they can take out on the trails this year, the 20-inch bikes on our list might be a great fit for your 5, 6, 7, or 8-year-old rider.

Considering bike fit is an essential aspect of choosing the right bike. It’s important to look for a frame with a stand-over height that will allow your kid to stand astride the bike with both feet flat on the ground, ensuring optimal comfort and safety. To determine the stand-over height, find your rider’s inseam measurement by measuring the length of the leg on the inside from crotch to ankle.

Best 20-inch mountain bikes for kids

20-inch wheels give young riders plenty of control and nimble turning, but without being too small to roll over rocks and roots on the trail. Fortunately, there are many good 20” wheel kids’ bikes to choose from. For more insight, check out Ten Things to Know Before You Buy a Kid’s Mountain Bike.

Here is an overview of our top 20-inch wheel bikes for 5, 6, 7, or 8-year-old kids. Be sure to explore the comparison table at the end of the article to see all the size, cost, and other data in one place.

Prevelo Zulu Three Mountain Bikes for Kids 5-8 Years-old

Prevelo Zulu Three

If you’re looking for high-performance mountain bike features on a 20-inch wheel size package, the Zulu Three is a great option. Each component is the real deal and has been carefully chosen to provide the best performance and fit for young riders ready to tear up the trails. Firstly, low and narrow Prevelo geometry keeps the rider low, balanced, and in control. Secondly, Tektro front and rear hydraulic disc brakes make speed control and stopping easy. Thirdly, the specially designed Shimano ZEE 10-speed drivetrain and derailleur. Importantly, this amazing component features a clutch that can be turned on with the flip of a switch to eliminate derailleur bounce over hard terrain and reduce chain drops. This bike is one of the best 20-inch mountain bikes for kids 5-8 years old!

Buy this kids’ mountain bike from:

Stand-over Height21.5 inches
Drivetrain1 x 10
Frame Material99M Series heat treated aluminum alloy custom formed
Claimed Weight22.2 pounds
ForkSpinner 300 20 AIR - 80mm travel
ShifterSRAM GX Trigger
Specialized Riprock 20 inch kids mountain bike

Specialized Riprock 20in kids’ mountain bike

The Specialized Riprock 20in kids’ bike is designed for advancing skills with its upgraded geometry and components uncommon in typical kids’ bikes. Notably, featuring a premium butted alloy frame, internal cable routing, dropper post-compatibility, and a quality 1x drivetrain, it offers features usually found in teen and adult bikes. Its structure and components, including an aggressive 68-degree head tube angle, ensure confidence on downhill rides, while the 830mm wheelbase and short 350mm chainstays provide stability and control on varied terrain. Furthermore, equipped with a microSHIFT Advent 9-speed drivetrain, C-STAR Hydraulic Disc Brakes, and Specialized Ground Control Sport, 2.35in-wide tires, this bike offers enhanced capability and traction for advancing riders.

Buy this kids’ mountain bike from:

Stand-over Height20.4 inches
DrivetrainmicroSHIFT Advent, 9-speed
Frame MaterialA1 premium butted alloy
BrakesC-STAR hydraulic disc brake
Claimed Weight21lb 13.2oz
ShiftermicroSHIFT Advent SL-M6190, 9-speed
Woom OFF 4 mountain bike for 8 year old kids

Woom OFF 4

The Woom OFF 4 offers children aged six years and older a super light and durable mountain bike for their first go on the pump track and easy cruising through forests and fields. With a kink in the top tube, it makes it easy to get on and off quickly in any situation, thereby giving kids greater safety out and about on the trails. It serves as the perfect introduction to mountain biking. Additionally, the Woom OFF 4 boasts 9 speeds easily accessed with a SRAM trigger shifter. Remarkably, this bike only weighs 17 pounds! Ideal for kids 6 – 8 years old who are 46″ – 51″ inches tall, the Woom OFF 4 provides an excellent fit for young riders transitioning to mountain biking adventures.

Buy this kids’ mountain bike from:

Stand-over Height19.5 inches
Drivetrain1 x 9
Frame MaterialAluminum/Alloy
BrakesHydraulic disc brakes from Promax
Claimed Weight17.2 lbs
ShifterSRAM X5 Trigger
Cleary Bikes Owl 20-inch 3 speed Mountain Bikes for Kids 5-8 Years-old

ClearyOwl 20-inch 3-Speed Kids’ Bike

Cleary designed the Owl with exploration in mind, ensuring that each ride takes your child higher and farther. At the heart of the Owl is its innovative drivetrain, centered around the internally geared Sturmey Archer 3-speed hub, seamlessly controlled by the buttery smooth Sturmey Archer trigger shifter. Encased within the hub’s aluminum shell, the shifting mechanism guarantees thousands of miles of maintenance-free operation, allowing your child to focus on the joy of riding.

With its 127mm alloy 3-piece cranks, the Owl delivers exceptional speed and acceleration, while the super-strong Tektro junior v-brakes ensure quick and reliable stops. The Owl is ideal for riders with an inseam measurement ranging from 19 to 23 inches.

Buy this kids’ mountain bike from:

Stand-over Height19 inches
Drivetrain1 x 3
Frame MaterialLightweight 1020 alloy steel
BrakesTektro junior v-brakes & brake levers
Claimed WeightNA
ShifterSturmey Archer DLS30 trigger shifter

Co-op Cycles REV 20 6-Speed Plus Kids’ Bike

Keeping it light, simple, and stable, the Co-op Cycles REV 20 6-speed bike has plus-size tires and disc brakes to give kids the traction, stopping power, and confidence to learn the joys of singletrack. The 6061 aluminum frame is light, strong, and easy to manage. The 6-speed drivetrain is controlled with a single, intuitively easy-to-use Shimano Revo twist shifter; a flick of the wrist changes gears for easy pedaling. Mechanical disc brakes provide quick response and sure-stopping power. Extra-wide, 2.6 in. all-terrain tires soften the little bumps and stick to the trail for a smooth, stable ride.

Buy this kids’ mountain bike from:

Stand-over Height18 inches
Drivetrain1 x 10
Frame Material6061Aluminum Alloy
BrakesMechanical Disc Brakes
Claimed Weight23 lbs. 15.8 oz.
ShifterShimano Tourney Revo Twist
Trek Roscoe 20 kids mountain bike

Trek Roscoe 20 kids’ mountain bike

The Trek Roscoe 20 is a mid-fat kids’ mountain bike designed to boost confidence on the trail. Equipped with 2.8˝ mid-fat tires, a 1x drivetrain, and a wide-range cassette, it’s the ideal choice for young riders (45-52˝ tall) looking to refine their skills while enjoying adventures with family or friends. Unlike scaled-down adult bikes, the Roscoe is purpose-built for kids, featuring simplified features such as a 1×8 drivetrain for easier handling. Its kid-specific frame geometry, including a sloping top tube, ensures effortless mounting and dismounting. Moreover, the integrated rear brake caliper protects against damage during laydowns. In summary, the Roscoe 20 offers young adventurers a thrilling trail experience tailored to their needs and capabilities.

Buy this kids’ mountain bike from:

Stand-over Height20.4 inches
Drivetrain1 x 8
Frame MaterialAlpha Silver Aluminum
BrakesTektro MD-M280 mechanical disc
Claimed Weight23 lbs. 8 oz.
ShifterShimano Altus M315
Cannondale Trail Plus 20 Kids' Mountain Bike

Cannondale Trail Plus 20 Kids’ Mountain Bike

The Trail Plus 20 is crafted to aid children between 3’10” and 4’3″ in building confidence and skills in off-road trail riding. Its durable lightweight alloy frame enhances maneuverability and riding pleasure, while its “kid correct” powerful disc brakes and low-torque 7-speed twist shifter cater to little hands. The bike’s super grippy kids’ plus-size wheels and tires (20 x 2.6″) ensure exceptional traction and comfort, enabling riders to absorb bumps and grip the terrain effectively. With its blend of traction, comfort, and nimble feel, the Trail Plus 20 provides an optimal platform for mastering trail riding skills with fewer spills.

Buy this kids’ mountain bike from:

Stand-over Height22.7 inches
Drivetrain1 x 7
Frame MaterialSmartForm C3 alloy
BrakesTektro mechanical disc
Claimed Weight22 lbs. 5.6 oz.
ShiftermicroSHIFT low-torque twist shift

trailcraft blue sky 20 inch mountain bike

Trailcraft Blue Sky 20 Mountain Bike

The Blue Sky 20, a 20″ bike from Trailcraft, stands out for its super light components, making it a remarkable choice for young riders. Notably, this bike includes a TC30 carbon fiber suspension fork, Superlight wheels, and alloy spindle direct mount cranks. Moreover, the Blue Sky 20 distinguishes itself as one of the only bikes in its category that accommodates a water bottle, adding to its practicality and versatility.

It’s a fun, playful bike suitable for all types of mountain bike riding, whether racing, park outings, or family trail rides. Achieving next-level big-kid performance, it boasts high-quality, top-shelf level components and category-leading bike weights. As one of the lightest 20-inch mountain bikes for kids, the Blue Sky sets a new standard for performance and enjoyment on the trails.

Buy this kids’ mountain bike from:

Stand-over Height20 inches
Drivetrain1 x 11
Frame Material7005 Aluminum/Alloy
BrakesShimano Deore Hydraulic
Claimed Weight20.2 pounds tubeless
ForkTC30 air sprung suspension 80mm fork
ShifterShimano Deore 4100
spawn yama jama 20 mountain bike for kids

Spawn Yama Jama 20

The Yama Jama 20″ raises the bar for kids’ trail bikes by incorporating several impressive features. Firstly, the 6061-T6 alloy frame includes an internal routing option for dropper posts, enhancing its versatility. Additionally, the Brood Bike Co. Eldorado fork provides 80mm of plush, nearly stiction-free travel, ensuring a smooth ride over rough terrain. The drivetrain utilizes a SRAM GX derailleur and shifter combo along with an 11-36T 10-speed SRAM cassette for efficient gear shifting.

Stopping power is effectively managed by powerful Tektro Auriga hydraulic disc brakes. Furthermore, the Yama Jama features Brood Bike Co. tubeless-ready rims with a wide profile and is complemented by the amazing Brood Maxtion foldable, tubeless-ready tire for enhanced performance on the trails.

Buy this kids’ mountain bike from:

Stand-over Height21 inches
Drivetrain1 x 10
Frame Material6061 aluminum alloy
BrakesTektro M285, hydraulic disc
Claimed Weight?
ForkBrood ElDorado 80mm
ShifterSRAM GX